For successful well-bore cementing, fluid loss control is extremely important in order to prevent rapid dehydration of cement slurry leading to premature gelation, lack of pumpability and incomplete cement hydration. Polymers are excellent candidates for fluid loss control due to its higher molecular weight, water retention capacity, compatibility, and availability. An overview of the different cement fluid loss control polymers and their current developments will be highlighted in this talk. Furthermore, we will also present our new findings about the synergistic effect on the fluid loss control performance of a biopolymer with different friction reducers (or dispersants) commonly used in the oil field cementing. Combination of rheology and high temperature/high pressure (HP/HT) fluid loss analyses were performed to carefully investigate the practical application of the biopolymer as an outstanding cement fluid loss control additive.

Role of polymers in fluid loss control of oilwell cement slurry

247th National Meeting (2014)

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